Pichler LBE 250 Service manual

Operating and mounting
instructions
Air humidification unit
LBE 250/LBE 500
Systematic ventilation.
COMFORT
VENTILATION
OPERATING AND
MOUNTING INSTRUCTIONS
LBE 250 / LBE 500

Contents
1. Introduction ............................................................................................................................ 4
2. Intended use............................................................................................................................ 4
5.Safety notices .......................................................................................................................... 6
6.Transport, storage and disposal................................................................................................8
6.1 Dimensions and weight ..........................................................................................................................8
6.2 Packaging ............................................................................................................................................... 8
6.3 Storage ................................................................................................................................................... 8
6.4 Check for completeness ..........................................................................................................................8
6.5 Scope of supply ....................................................................................................................................... 8
7.Structure ................................................................................................................................. 9
8.Description of functions......................................................................................................... 10
8.1 Working principle.................................................................................................................................. 10
8.2 Humidity control ...................................................................................................................................10
8.3 Temperature control............................................................................................................................. 11
9.Control system....................................................................................................................... 11
9.1 Operation/keypad/display....................................................................................................................11
9.2 Customer menu.....................................................................................................................................12
9.3 Settings Temperature 21°C< ................................................................................................................12
10.Operational statuses.............................................................................................................. 13
10.1 Automatic activation/deactivation.......................................................................................................13
10.2 Automatic activation/deactivation (Auto STANDBY)............................................................................13
10.3 Manual activation/deactivation (Manu STANDBY) ..............................................................................13
10.4 Automatic activation/deactivation depending on air current ("Control Off")......................................13
10.5 Rinsing ..................................................................................................................................................14
10.6 Control on ............................................................................................................................................. 14
10.7 Fill.......................................................................................................................................................... 14
10.8 Water replacement............................................................................................................................... 14
11.Error messages ...................................................................................................................... 14
11.1 Filter change! (customer)......................................................................................................................14
11.2 UVC pip defective! (expert) .................................................................................................................. 14
11.3 Descaling! (expert)................................................................................................................................ 14
11.4 Pump, outlet defective! (expert)...........................................................................................................15
11.5 Humidity too high! (expert) ..................................................................................................................15
11.6 Humidity too low! (expert)....................................................................................................................15
11.7 Service (expert) .....................................................................................................................................15
3.Liability ................................................................................................................................... 5
4.Warranty ................................................................................................................................. 5
6.6Waste disposal........................................................................................................................................ 8

13.Commissioning................................................................................................................... 16
14.Expert menu ...................................................................................................................... 18
14.1 Expert menu overview ...............................................................................................................................18
14.2 Settings ...................................................................................................................................................... 19
15.Technical data.................................................................................................................... 24
16.Dimensions/design variants ............................................................................................... 25
16.1 LBE 250...................................................................................................................................................... 25
16.2 LBE 500...................................................................................................................................................... 26
17.Mounting ........................................................................................................................... 27
18.Connections/installation.................................................................................................... 28
18.1 Routing of air lines.....................................................................................................................................28
18.2 Waste water connection............................................................................................................................ 28
18.3 Mains water connection ............................................................................................................................29
18.4 Water heater battery connection ..............................................................................................................30
18.5 Hydraulic connection diagram (for version with warm water heater battery):.........................................30
18.6 Low temperature heating (only LBE 250!): ................................................................................................31
19.Wiring diagram .................................................................................................................. 32
20.Maintenance (expert) ........................................................................................................ 33
22.Subject to change without notice ....................................................................................... 35
23.EG-Konformitätserklärung ................................................................................................. 36
21.Spare parts and accessories ................................................................................................ 35
12.Maintenance (customer): "Filter Change" ......................................................................... 15

1. Introduction
Dear Customer,
Thank you for purchasing the LBE 250/LBE 500 air humidification unit.
The LBE 250/LBE 500 air humidification unit is available in two versions and corresponds to state-of-the-
art technology. It convinces through operating safety, operating comfort, and economic efficiency.
To operate your air humidification unit safely, properly, and economically, carefully read and observe
these operating instructions.
Use the air humidification unit only when it is in a perfect state in a proper, safety and risk conscious
manner under consideration of all information in these instructions.
If you have further questions, please contact us.
In case of inquiries and spare parts orders, please have the device
type and serial number (see the type plate on the device) on hand!
Please keep these operating instructions in a safe place that is
always accessible.
Please contact us in case of a loss of the documentation.
2. Intended use
The LBE 250/LBE 500 air humidification unit is intended for immediate or later installation into ventilation
and air conditioning systems with a maximum air volume flow of 250 m³/h (LBE 250) or 500 m³/h (LBE
500).
This device, which is accessible to the general public, is intended for installation in residential or
commercial buildings.
It is used for active indoor air humidification and can also be used for auxiliary heating.
The compact air humidification unit works according to the principle of natural evaporation and guarantees
constant, optimum indoor air humidity in living areas, adjustable in a range from 40% to 60 % relative
humidity.
In addition, a constant supply air temperature that can be adjusted within a range from 15°C to 25°C is
generated by an integrated air heater battery.
As a part of intended use, our required operating and mounting instructions must also be observed. Only
qualified, assigned personnel may work on and with the device. People who transport or work on the
device must have read and understood the corresponding parts of the operating instructions, especially
Chapter 3 "Safety Instructions."
In addition, the plant installer must inform the end user of any possible risks.
The LBE 250/LBE 500 air humidification unit is not a product that is ready for use. It may not be
commissioned until it has been properly installed into the ventilation and air conditioning system and
connected.
The air humidification unit is not suited for outdoor setup. It may only be used in suitable, temperature-
controlled indoor rooms.
Subject to technical changes.
We are constantly performing technical improvements and optimisations on your products and reserves
the right to modify the devices or technical data without prior notice

The manufacturer shall accept no liability for any damages due to:
3.Liability
4.Warranty
The warranty begins with initial startup, at the latest, however, one month after delivery has taken place.
The warranty covers the pure replacement of materials only and does not include any claims for
the compensation of services. It applies only if there is proof of appropriately performed maintenance in
accordance with our regulations and by a licensed company that specializes in installation work.
The warranty right extends to a maximum term of 24 months after installation of the air humidification unit
LBE 250/500, however, up to a maximum of 30 months after the manufacturing date.
Warranty claims can be asserted only for material and/or design defects that have occurred during the
warranty term. In the event of a warranty claim the air humidification unit LBE 250/500 must not be
dismantled without the previous written authorization of the manufacturer. The manufacturer
accords a warranty on spare parts only if they have been installed by an installer who is recognized by the
manufacturer.
The warranty shall lapse automatically upon expiry of the warranty period, in the event of improper
operation, e.g. operation without a filter, if genuine parts supplied by the manufacturer are not installed, in
the event of non-authorizedchanges or modifications that have been performed on the air humidification
unit.
Failure to comply with these Operating and Installation Instructions will automatically void all warranties.

5.Safety notices
General information
The following safety symbols indicate text passages that warn against risks and sources of danger. Please
familiarise yourself with these symbols.
Caution!
The non-observance of this warning can lead to injury or danger to life and limb and/or damage
of the device.
Attention: dangerous electrical voltage!
The non-observance of this warning can lead to injury or danger to life and limb.
General safety notices
All safety and danger notices located on the device must be observed.
In case of malfunctions, shut down the device immediately and secure it against activation.
Malfunctions must be eliminated immediately.
After servicing work, have expert personnel re- establish the operating safety of the device. Use only
original spare parts. For the operation of the device, the national regulations also apply without limitation
Read these operating instructions carefully and follow the safety notices.
Damage arising from a non-observance of the operating and maintenance instructions is not covered by
the guarantee.
This device is not intended to be used by people (including children) with limited physical, sensory, or
mental capabilities or with a lack of experience and/or knowledge, unless supervised by a person who is
responsible for their safety or who instructs them in the use of the device. Make sure that children do
not play with the device.
Caution!
After commissioning, the current supply may not be interrupted for longer than one day so that
the hygienic requirements can be observed.
In case of an interruption in the electrical voltage supply of more than 24 hours, the air humidification unit
may become contaminated with germs. In this case, a general cleaning of all components should be
performed before the unit is commissioned. If necessary, components must be replaced.
Deactivation of the ventilation and air conditioning system
If the ventilation and air conditioning system is decommissioned for more than one day, the air
humidification unit must be shut down beforehand for at least two hours. In this way, the air humidification
unit can thus dry out and hygienically perfect function is guaranteed.
Working on the device
Mounting, commissioning, maintenance, and repairs must be performed by an authorized expert
(heating specialist firm/installation specialist firm).
When working on the device, de- energise it and secure it against reactivation. The water supply
must be shut off.
UVC disinfection pipes
A UVC pipe type Phillips TUV 16W 4P-SE is installed into the standard version of the device! It
may only be replaced by a type listed on the label of the device. UVC pipes may be changed only
by authorised expert personnel! Before the unit is opened or a UVC pipe is changed, the device absolutely
must be de-energised and the mains plug must be pulled. Never look directly into the lit UVC light
source without eye protection.
Device setup/installation
The device may be installed only in frost-free, dry rooms. The room temperature must lie between +5°C
and a maximum of +40°C.
Ventilation and air conditioning system air lines that are not installed in heated areas must be designed
with suitable heat insulation (danger when the dew point temperature is undershot) to prevent the
formation of condensation.
For components or windows with bad heat insulation properties, in case of missing construction, and in old
buildings, condensation may form on window glass at cold temperatures and in case of increased air

humidity in living areas. The surface temperature of the components must lie above the dew point
temperature of the indoor air (at least about +15°C).
In normal operation, germs or mould cannot form inside the device unit since the humidification water is
continuously treated and disinfected during operation.
Mounting
The device is intended for horizontal mounting. It may deviate a maximum of +/-1° from the horizontal
position and must be mounted to a massive wall that can bear the load. The intrinsic operating weight of
the air humidification unit must be taken into consideration for the suspension. No shocks or jolts may
affect the device. For mounting and setup, the national and local regulations must be observed. The
device may be installed only in compliance with the national installation regulations.
Electrical connection
The electrical connection of the supply and sensor line should be performed by an electrician
according to the local regulations. Before the device is opened, the voltage supply must be shut
off at all poles and secured against reactivation. If the mains connecting line of the device is damaged or
defective, it must be repaired or replaced immediately to prevent risks. This work may be performed only
by authorised expert personnel.
Water connections
The water, heating, and waste water connections must be established by an expert. For the connection to
the water supply, only the original connecting hoses provided in delivery may be used. Pay attention to the
seal tightness of the lines. The maximum water pressure of the mains water supply of 0.7 MPa and of the
water heater battery of 1 MPa may not be exceeded.
Water quality
Only mains water that corresponds with the local mains water ordinance may be used for the water supply.
The water inlet pipe to the air humidification unit should be established using optionally available
connection sets.
In case of a chlorine content over 0.1 mg/l, the standard water filter (5 μm) must be replaced by a dual
filter (5 μm/carbon). If the iron content of the mains water exceeds a value of 0.1 mg/l, an iron filter should
also be built into the water inlet pipe.
The device can be used for a maximum hardness of water of 26°dH. When this value is exceeded, the
service life of the reverse osmosis membrane is considerably reduced.
Operation of the device
Every working method that impairs the safety of the device is prohibited. All warning and safety devices
should be regularly checked for proper function. Safety devices may not be disassembled or
decommissioned.
Mounting, disassembly, maintenance, and servicing of the device
If maintenance work or repairs are performed, the device should be de-energised. The attachment or
installation of additional equipment is not permitted. In this case, please consult with the manufacturer.
Electrical system/electronics Work on the electrical plant parts may be performed only by
electricians. If maintenance work or repairs are performed, the device should be de-energised.
In case of faults in the electrical voltage supply, shut down the device immediately. Use only
original fuses with the required current strength. Check the electrical equipment of the device regularly.
Discovered defects like loose connections or scorched cables must be eliminated immediately. After the
electrical work or servicing has been performed, the safety measures should be tested (e.g. earthing
resistance).
Requirement on the installation site
The installation of the air humidification unit may take place only in rooms that have an existing water
outlet. In addition, safety measures that automatically close the water supply to the air humidification unit
in case of leakage (e.g. safety valve/water connection set) must be taken within the room. The air
humidification unit is designed in IP20 type of protection.

6.Transport and storage and disposal
To prevent damage during transport due to force, the air humidification unit must be handled carefully.
During transport by hand, reasonable human lifting and carrying forces must be observed.
Age Reasonable load in kg
Women Men
15 – 18 years 15 35
19 – 45 years 15 55
Over 45 years 15 45
The unit may not be transported by the connecting cable. Impacts and shocks should be avoided.
6.1 Dimensions and weight
Dimensions of the packing unit
LBE 250: Width: 800 mm, height: 460 mm, depth: 420 mm
LBE 500: Width: 870 mm, height: 600 mm, depth: 600 mm
Weight of the packing unit:
LBE 250 28 kg without optional accessories
LBE 500 62 kg without optional accessories
6.2 Packaging
The safety labels attached to the box absolutely must be observed. During delivery, look out for and check
any damage to the packaging or device. Problems or damage must be reported immediately.
6.3 Storage
The device must be stored in the packaging in a dry, dust-free, and frost-protected manner. Avoid storage
periods that are too long (recommendation: one year maximum).
6.4 Check for completeness
When the device is delivered, make sure:
The type and serial numbers on the type plate correspond with the information in the order and
delivery documents.
The equipment (optional accessories) is complete.
All parts are present in a perfect state.
Note: In case of any transport damage and/or missing parts, you must inform the transport company or
suppler immediately in writing.
6.5 Scope of supply
The delivery comprisesthe following:
• the air humidification unit
• the operating and mounting instructions
• accessories like: the water connection set (see Section 16.3)
• optional accessories like: the pumps/mixer connection set (see Section 16.4)
6.6Waste Disposal
Care has to be taken that the packing material and the protective packing are disposed of in an
environmentally friendly way. The packing materials have to be disposed of in accordance with the local
stipulations, for example, wooden pallets and cardboard packing have to be recycled.
Units that are no longer in working order have to be dismantled and properly disposed of by a
specialized company via suitable collection centres and in compliance with the waste electrical
and electronic equipment ordinance (WEEE), which provides for ratification of community law,
directive 202/95/EC (RoHS) and the directive 2002/96/EC (the WEEE directive).

7.Structure
1. Water tank
2. Motor
3. UVC pipe for disinfection
4. Sensor plate with a temperature and humidity sensor
5. Inlet valve
6. UVC pipe series connection unit
(LBE 250, 1 pc / LBE 500, 2 pcs)
7. Reverse osmosis membrane
8. Outlet pump
9. Electronic operation system
10. Main board
11. Bladed rotary evaporator
12. Warm water heater battery (air side)

8. Description of functions
8.1 Working principle
The air humidification unit works according to the principle of natural evaporation and guarantees a
constant relative air humidity that can be adjusted between 40% and 60% in the supply air. The unit works
automatically, and the air humidity is electronically monitored in the device. The indoor air can thus not be
overhumidified.
The air humidification unit is dimensioned for a maximum operating air volume flow of 250 m³/h (LBE 250)
/ 500 m³/h (LBE 500). The water tank is supplied with mains water from the mains water supply. According
to the evaporative power, a maximum of 2.5 litres of water, which is continuously placed, is located in the
tank.
The maximum filling level is limited using a floating switch and mechanical overflow. The water in the tank
is continuously disinfected using UVC light, whereby the UVC pipe illuminates the complete water tank and
evaporation surface. The UVC pipe has a radiant power of 4.3 watt at a wavelength of 253.7 nm. For
safety reasons, the UVC pipe is monitored by UV diode. This monitoring process can detect a failure,
soiling, or line breakage of the disinfection unit. If the radiant power is too low, the water is drained and a
error message is output. The unit is automatically shut down in case the UVC pipe malfunctions.
To prevent deposits during operation, especially scale deposits on the bladed rotary evaporator and the
water tank, the standard version of the air humidification unit is equipped with a reverse osmosis unit. In
the standard design, the reverse osmosis unit is integrated into the water inlet pipe between the solenoid
valve and the water tank.
A prefiltering unit for the water supply, which should be installed during the course of mounting, is included
in the scope of supply. As an additional safety measure, the water is drained and an error message output
in case of the air humidity is exceeded by more than 30% of the reference value of the water for longer tan
25 hours.
8.2 Humidity control
The air humidity is controlled using the water moistened surface of the bladed rotor and the water level in
the tank. As the water level rises, the rotor blades are submerged more deeply into the water, increasing
the surface area of the blades that becomes wet. The passing air flow absorbs moisture from the wet
blades, in accordance with a specific reference value that is set as a constant. However, as a rule the set
relative humidity is converted to the relevant absolute humidity at 21 °C (factory setting) and then
controlled.
Measured
temperature
Set
humidity
Controlled humidity